Process for producing light-transmitting objects.



No. 847,396. PAT-ENTED MAR.19, 1907;

PROCESS FOR PRODUCING LIGHT TRANSMITTING OBJECT-Sv Arm-tumor! FILED APB.so, 1900. RENEWED FEB. 12, 1907.

UNITED STATES.

PATENT OFFICE.

ERNEST noun, or LONDON, ENGLAND.

PROCESS-FOR PRODUCING ueHT-TRANsM TTm OBJECTS.

noxsmsee.

Specification of Letters Patent.

Patented March 19, 1907,

Applicatioii filed April 30, 1906'. Renewed February 12, 1907- SerialNo. 357,058.

To all whom it may concern:

Be it known that I, ERNEST Bonn, a subjectof the King of Great Britain,and residing at London, England, have invented new and-usefulImprovements in Processes for ;Pr0duci'ng- Light-Transmitting Objects,of

1 which the following is a specification.

My invention relates to a process for pro ducing light-transmittingobjectssuch as lamp bulbs, globes, shades, and the like having superiorlight-transmitting and lightdifl'using qualities, and consists in thesuc- 'cessive steps hereinafter described, with the steps will be 'meansillustrated in the drawings, which partlcularly pointed out in the-claims.

The object of my invention is to provide a process by. the use of whicha pluralityand multiplicity of individual and'independc'nt lenses may beformed integral with' the walls of light-transmitting objects, such as aglobe or-bulb of an electric lamp, for the purpose of improving theillumination and the diffusion of light. Forthe purposebf illustration Iwill de-v scribe my invention with particular reference to theproduction of incandescent electric-lamp bulbs; but it will beunderstood that other light-transmitting or light-diflusing objects maybe formed similarly. i

In the accompanying drawings, forming a part of this application, and inwhich like letters refer to corresponding parts, I have shown the partswith which I carry out my process and the product I obtain.

Figure 1 represents aside elevation of an ordinary glass tube. fromwhich smooth or common globes or bulbs are formed or blown.

- Fig. 2 represents different forms of rods, such as may be used, havingbosses or notches for producing the lrregular lens-surfaces hereinaftermentioned. Fig. 3 represents the uniting of such a rod to a glass tubeby winding it about the same.

Fig. 4 represents a side view of a globe or bulb-made 1n accordance withmy process, showing a plurality and multiplicity of lenses and providedwith an incandescing filament.-' Fig.

o represents a bottdm plan view of the globe or' bulb man ufactured bymy process, showing in convolute lines a' pluraht-y and multlplicity oflenses on the same.

In making my lamp I take a lass tube A, preferably partly opal orcolored, of the size and length usually employed in forming or blowingglass bulbs or globes for lamps and wind spirally around, either insideor outside, rod or thread B, provided with notches, bosses, orswellings, round, oval, or oblong, said rod or thread B havingbeen-heated to a suflic'ient degree to render it pliable and easilybent, as shown in Fig. 3. The tube and rod thus wound are then heated'to the required degree for blowing and are blown to any desired size.During the blowing operation and swellings, is incorporated and'blendedthereof, making an irregularly-corrugated surface with a multitu e ofindependent and crossing of the surfaces ofthe tube and rod. Theselenses will disseminate independwhat I claim, and desire to secure byLetters Patent, is

1-. The herein-described process of making light-transmitting andlight-diffusing objects which consists in forming a rod having numeroussurface irregularities or bulbs and uniting the same with a plainsurface, substantially as described.

2. The herein-described process of forming or making light-transmittingand light-diffusing objects, which consists in winding upon a therequired temperature for blowin and blowing the bulb and rod to theesired face of said globe a multiplicity of light-radi atinglenses-substantially as described,

In testimony whereof I affix my signature in presence of two subscribingwitnesses.

ERNEST BoHMj VVit-nesses H. D. JAMESON,

A. NUTTI'NG.

the spirally-wound glass rod, with its bosses ent and distinct rays ofli ht, and thus. the.

glass tube, a rod having numerous surface irregularities,' raisingthetube and rod to with the tube and becomes an integral part lensesformed in the globe by the breaking up Having thus fully described myinvention, I

shape and size, thereby forming on the sur-

